# SDR QMLA2017072517071

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2017
- Submitted: July 26, 2017
- Operation: Air carrier
- Aircraft: [N101HF](https://openairdocs.org/aircraft/N101HF), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53463
- Aircraft time: 6,283 hours, 22,181 cycles
- Engine: Allsn 250C47B
- Engine time: 349 hours, 766 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Part number: M25010672
- Part serial: CAE848808
- Condition: Making Metal
- Location: Primary
- Part time: 349 hours, 766 cycles
- Stage of operation: LD
- How discovered: O
- Nature of condition: P
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2017072517071

## Discrepancy

ENGINE WAS MAKING UNUSUAL NOISE IN ALL PARAMETERS. WHEN ENGINE WAS SHUT DOWN, LOWER AND UPPER CHIP PLUGS WERE REMOVED AND BOTH PLUGS WERE FOUND TO CONTAIN METAL CHIPS.

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